112 Proceedings of tlie Royal Society of Edinburgh. [Sess. 
List of 1000 Rocks 
Group. 
Si0 2 . 
Ti0 2 . P 2 0 6 . 
h 2 o. 
A1 2 0 3 . 
Fe 2 0 3 . 
FeO. 
MgO. 
g 
In^o. 
K 2 0. 
Total. 
Sp.Gr. 
22 
595 
■9 -4 
20 
16-4 
3-2 
34 
33 
5-0 
3-3 
2-8 
100-2 
58-4 
36 
18-2 
6-0 
2-4 
6-2 
3-2 
2-0 
100-0 
24 rocks 
61-8 
■2 -1 
1-6 
177 
2-7 
2-8 
2-2 
^47 
3-9 
2-5 
100-3 
2-61 
±1-3 
±•7 
•8 
* 
1-4 
±1 
•1 
±5-3 
(2-18) 
23 
aba 
bb a 
67-5 
■1 -1 
•5 
186 
1-1 
1 
•2 
•5 
11-5 
1 
100-3 
64-3 
1-0 
175 
31 
1-3 
■3 
•6 
73 
4-3 
637 
•8 
179 
43 
•5 
•1 
•8 
7-2 
5-2 
100-5 
62-6 
•8 
18-2 
•3 
4-4 
2-6 
•7 
6*5 
1001 
62-5 
202 
29 
1-9 
38 
5-3 
3*4 
1000 
1-1 
■7 
3-3 
•5 
11-8 
•8 
100-0 
2*70 
62-4 
■9 
16-9 
7 3 
•8 
3-5 
4-4 
2-9 
991 
2-75? 
62-2 
•1 
186 
22 
ri 
•7 
1-6 
39 
99-5 
61-7 
•9 
17-5 
1-4 
3'9 
21 
•2 
8-5 
3-4 
99-5 
61-5 
22-4 
1-8 
6 - 2 
4-9 
2-8 
99-6 
2-72 
18-2 
6-0 
1-8 
•8 
36 
5 5 
2-8 
101-5 
•1 
1-4 
20-0 
4-3 
1-8 
•2 
•9 
3*2 
100-0 
2*71 
59-8 
1-0 
17*2 
7-6 
1*3 
6’0 
4-0 
31 
1000 
55-4 
•9 
4-9 
18-3 
5*9 
3-5 
32 
7-1 
•2 
100-5 
2-73 
54*5 
5-2 
20*0 
2-3 
33 
•6 
2-1 
8*7 
2-8 
99-5 
15 rocks 
615 
1 
1-4 
18-7 
3-3 1-6 
1-0 
23 
7-2 
2-9 
1001 
2-72 
±1-5 
±1-1 
L-6 
2-0 
±1 
•9 
±8-1 
24 
a b a 
bbb 
61-1 
•3 
•8 
18-8 
2-0 
31 
•4 
1-3 
6-6 
60 
100-0 
2-66 
60-7 
•2 
•6 
169 
91 
4-4 
2-8 
4-2 
100-0 
? 
60-6 
•7 -2 
•7 
18-3 
29 
2-7 
•5 
1-0 
6-7 
5-7 
99-9 
600 
21-0 
8-5 
•7 
32 
43 
20 
99-7 
2-5*0? 
599 
•6 
17-2 
100 
•8 
30 
6-2 
2-9 
100-5 
59-7 
1-9 
18-9 
4-9 
•7 
1-3 
63 
60 
99-6 
59-4 
*3 -6 
•4 
17-9 
6-8 
2-0 
1-8 
4-2 
1-2 
67 
101-2 
2*71 
58-7 
1-0 *5 
1-0 
195 
36 
2-6 
30 
5-7 
4-5 
100-9 
58-4 
34 
18-2 
1-0 
5-0 
1*5 
1-2 
4-7 
6-7 
1001 
2*66 
58-1 
1-9 -7 
18-2 
49 
2-4 
1-6 
33 
2*8 
100-0 
562 
•3 *1 
1-2 
23-2 
•2 
62 
2-4 
38 
5-3 
993 
543 
1-3 
6-0 
17-4 
2-3 
62 
3-0 
31 
3-8 
33 
100-7 
2*67 
12 rocks 
58-9 
•5 -2 
i‘4 
18-8 
3-6 3-6 
1-1 26 
4-8 
4*7 
100-1 
2-64 
2-9 
±1-2 
L'5 
1-3 
•8 
±7-7 
25 
a b b 
aaa 
646 
1 2-2 
16-2 
10 
21 
3-3 
79 
2-7 
100-0 
630 
2-0 
14-2 
6 7 
11 
5-4 
5-7 
35 
101-6 
Classification of Igneous Rocks. 
113 
1907-8.] 
— continued. 
G. P. Merrill, Pr. U.S. Nat. Mus ., xvii, p. 651, 
1895. 
Q. Jowl'll., 1890, p. 349. 
Hyp. andesite. 
Pyroxene andesite. 
Montana. 
Washoe. 
H. W. Turner, 17, A.R.U.S.G.S., i., p. 727, 1896. 
N. Jahrb., 1893, p. 497, vol. ii. 
G. T. Prior, Min. Mag., xiv., p. 266, 1900. 
Hatch, Petrology, p. 163. 
N. Jahrb., 1904, vol. i., p. 70. 
N. Jahrb., 1902, vol. ii., p. 395. 
Bischof, Lehrb. A. Geol., I. Aufl., vol. ii., p. 2181. 
.V. Jahrb., 1893, vol. ii., p. 497. 
Q. Joum., 1895, p. 319. 
Zeitsch. d. d. geol. Gesell, pt. iv., p. 375, 1868. 
A. Jahrb., 1892, vol. i., p. 312. 
A. S. Eakle, A.J.S., vi., p. 491, 1898. 
Butley, p. 236. 
Q. Journ., 1905, p. 595. 
V. Hackman, Fennia, xi., p. 158, 1894. 
Soda syenite porphyry. 
Acmite trachyte. 
Solosbergite. 
Trachyte. 
Syenite porphyry. 
Mariupolite. 
Andesite. 
Acmite trachyte. 
Keratophyre. 
Quartz mica diorite. 
Andesite. 
Tinguaite. 
Andesite. 
Trachytic rock. 
Tinguaite. 
California. 
Montana. 
Abyssinia. 
Peppercraig. 
French Alps. 
Sea of Azoff. 
Siebengebirge. 
Montana. 
Ruebeland, Harz. 
Neurode. 
Sulphur Island. 
Massachusetts. 
Mean of several localities. 
St David’s Head. 
Finland. 
H. S. Washington, J.G., vii., p. 118, 1899. 
Merrill, p. 215. 
H. Kosenbusch, Rlenumte, p. 199, 1898. 
Zirkel, Zeitsch. d. d. geol. Gesell., 1859, p. 535. 
A. Jahrb., 1892, vol. L, p. 313. 
A. Jahrb., 1893, vol. ii, p. 347. 
Whitman Cross, Table XIII. 
Whitman Cross, Table XII. 
A Jahrb., 1901, suppl. 14, p. 39. 
A B. Lyons, A.J.S., ii., p. 424, 1896. 
Q. Journ., 1879, p. 44. 
K. A. Lossen, Jb. Pr. G.L.A., x., p. 316, 1892. 
Solosbergite. 
Syenite porphyry. 
Trachyte. 
Andesite pumice. 
Elaeolite syenite. 
Syenite. 
Laurvikite. 
Keratophyre. 
Andesite. 
Foyaite, elaeolite syenite. 
Porphyrite. 
Massachusetts. 
Albemarle Co. 
Massachusetts. 
Eifel Gebirge. 
Sulphur Island. 
Fourche Mts., Arkansas. 
Laurvik, Norway. 
Harz. 
Hawaii. 
Portugal. 
Harz. 
(Fuchs), Prestwich, i., p. 35. 
Q- Journ., 1890, p. 349. 
Gneiss (reduced to 100). 
PropyliteJ (hornbl. ande- 
site). 
Harz. 
Tokay. 
YOL. XXVIII. 
